Home / 8,587,987.76-12,880,628.88-7,138,343.20

Finding the Fourth Proportional to 8,587,987.76, 12,880,628.88 and 7,138,343.20

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Solution

The fourth proportional to 8,587,987.76, 12,880,628.88 and 7,138,343.20 is: 10,706,390.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,587,987.76 : 12,880,628.88 = 7,138,343.20 : x
  2. Step 2: Convert to fraction form
    8,587,987.76/12,880,628.88 = 7,138,343.20/x
  3. Step 3: Cross multiply
    8,587,987.76x = 12,880,628.88 × 7,138,343.20
  4. Step 4: Simplify right side
    8,587,987.76x = 91,946,349,577,271.62
  5. Step 5: Solve for x
    x = 91,946,349,577,271.62/8,587,987.76
  6. Step 6: Final answer
    x = 10,706,390.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.